It's working as expected and it's very usefull for my needs. But it necessary to improve the user interface, add cleaning options and fix the bugs.
Edited after 2 months of use:
Extension slowed down extremely, become unresponsive and finally unuseful. I had to deinstall it definetelly.

Good extension, I like it! Although it's not very useful, but sometimes it may be useful. And the problem is that the page load too slow when the record increase, it takes 22 seconds when I have 2423 records.